Question

Determine a raiz quadrada aritmética de:
a) (x + 2)^2
b) (2x - 3)^2
c) ( x^2 -6x + 9)
d) (4x^2 + 4x+ 1)

Answer 1

a)
(x+2)²=$\sqrt{(x+2) ^{2} } =x+2$

b)
(2x-3)²=$\sqrt{(2x-3) ^{2} } =2x-3$

c)
x²-6x+9
(x-3)²=$\sqrt{(x-3) ^{2} } =x-3$

d)
4x²+4x+1
(2x+1)²=$\sqrt{(2x+1) ^{2} } =2x+1$